.todoList{
  display: flex;
  flex-direction: column;
  height: 82%;
  width: 95%;
}

/*中部未完成任务区*/
.content-center{
  background-color:#CDCDCD;
  width: 100%;
  height: 50%;
  overflow: hidden;
}

/*项目容器*/
.item-container{
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  height: 70%;
}

/*底部已完成任务*/
.content-bottom{
  background-color:#CDCDCD;
  width: 100%;
  height: 50%;
}